/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.nifi.flow.encryptor;

import org.apache.nifi.encrypt.PropertyEncryptor;

import java.util.regex.Pattern;

public abstract class AbstractFlowEncryptor implements FlowEncryptor {
    protected static final Pattern ENCRYPTED_PATTERN = Pattern.compile("^enc\\{([^}]+?)}$");

    protected static final int FIRST_GROUP = 1;

    protected static final String ENCRYPTED_FORMAT = "enc{%s}";

    protected String getOutputEncrypted(final String inputEncrypted, final PropertyEncryptor inputEncryptor, final PropertyEncryptor outputEncryptor) {
        final String inputDecrypted = inputEncryptor.decrypt(inputEncrypted);
        final String outputEncrypted = outputEncryptor.encrypt(inputDecrypted);
        return String.format(ENCRYPTED_FORMAT, outputEncrypted);
    }
}
